Heredity Flashcards
what does Dna stand for
deoxyribonucleic acid
what does Rna stand for
Ribonucleic acid
what is a gene
the basic physical and functional unit of heredity
what are mutations
the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes
what is a dominant trait
a trait that is more powerful that a recessive trait
what is a recessive trait
a trait that is less powerful that a dominant trait
what is probability
how likely something is to happen
what is a sex chromosome
a type of chromosome involved in sex determination
what is pedigree
the recorded ancestry, especially upper-class ancestry, of a person or family
What is heredity
the passing on of physical or mental characteristics genetically from one generation to another
what is nucleotide
a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA
what is a meiosis
a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes
what is alleles
one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome
what is genotype
an organism’s full hereditary information
what is phenotype
an organism’s actual observed properties, such as morphology, development, or behavior
